Students and staff are being told to enter the school via Cook Street.

“Buses will continue to run using an alternate route which was established in partnership with Peel Police, who will be on site to assist with traffic in and out of the school,” the school said.

Police and fire crews were called to a commercial plaza near the area of Dundas and Hurontario streets at 7:30 a.m. on Sunday after reports of a fire and explosion. Authorities said they are still trying to determine the cause.